Calculators — All 96 Free Online Tools
Every calculators tool on Toolfyra in one place — 96 free tools that run entirely in your browser. No signup, no uploads, no watermarks: open a tool, use it, close it — your data never leaves your device.
Age Calculator
Free age calculator: find your exact age in years, months and days from your date of birth — plus total days,
％Percentage Calculator
Free percentage calculator: what is X% of Y, X is what percent of Y, and percentage increase or decrease. Inst
🏦EMI / Loan Calculator
Free EMI calculator: compute monthly loan payments, total interest and total repayment for home, car or person
⚖️BMI Calculator
Free BMI calculator for metric and imperial units. See your Body Mass Index and healthy weight category instan
🎓CGPA / Percentage Converter
Free CGPA to percentage calculator: convert CGPA↔percentage using the CBSE (×9.5) and HEC-style (÷4) formulas.
📏Land Area Converter
Free land area converter: convert between Marla, Kanal, Acre, Hectare, Square Feet, Square Yards and Square Me
📆Date Difference Calculator
Free date difference calculator: days, weeks, months and working days between two dates. Great for deadlines,
🧁Cooking Unit Converter
Free cooking converter: cups, tablespoons, teaspoons, fluid ounces, milliliters and grams (by ingredient densi
🏷️Unit Price Comparator
Free unit price comparator: compare two pack sizes and prices — which is actually cheaper per 100g/oz/unit, in
🐕Pet Cost Calculator
Free pet cost calculator: food, vet, insurance, grooming and boarding for dogs and cats — the honest first-yea
⛽Fuel Cost Calculator
Free fuel cost calculator: trip distance × efficiency × fuel price — split between passengers, one-way or retu
🎓Grade Calculator
Free grade calculator: points or percentage in — letter grade, GPA point and pass/fail out, with grading-scale
📝Final Exam Grade Calculator
Free final grade calculator: current grade, exam weight and target — the exact score you need on the final, wi
📅Business Days Calculator
Free business days calculator: count working days between two dates (weekends excluded) or add N business days
🔢Number to Words Converter
Convert any number to English words instantly: 1,250,000 → one million two hundred fifty thousand. Internation
🧮Online Calculator
Free online calculator for everyday math: add, subtract, multiply, divide, percent, square root, sign and memo
📏Length Converter
Free length converter: convert meters, feet, inches, cm, km, miles, yards and mm instantly. Accurate to 6 deci
⚖️Weight Converter
Free weight converter: kg to pounds, ounces to grams, stones to kg and more — exact factors, instant results,
🌡️Temperature Converter
Free temperature converter: C to F, F to C, Kelvin and Rankine — exact formulas, instant results, works offlin
🏎️Speed Converter
Free speed converter: km/h to mph, knots, meters per second, feet per second and Mach — instant, offline, exac
🗺️Area Converter
Free area converter: sq m, sq ft, acres, hectares, sq miles, sq km, bigha-style conversions — instant and exac
🧪Volume Converter
Free volume converter: liters, gallons, ml, cups, fluid ounces, tablespoons, cubic meters — instant, exact, of
🎈Pressure Converter
Free pressure converter: PSI to bar, kPa, atmospheres, mmHg/Torr, mbar — exact factors, instant, offline.
🍳Cooking Measurement Converter
Free cooking converter: cups to grams and ml, tablespoons, teaspoons, fluid ounces — US and metric, recipe-saf
👟Shoe Size Converter
Free shoe size converter: US to UK, EU and centimeters for men, women and kids — instant, offline, shopping-sa
🎲Random Number Generator
Free random number generator: any range, optional decimals, unique-only mode, bulk generate — instant and priv
🎲Online Dice Roller
Free dice roller: roll any dice notation (2d20+5, 4d6) with crypto-fair randomness — tabletop RPGs and board g
🪙Coin Flip Online
Free coin flipper: flip 1–1000 coins, see heads/tails counts and percentages — crypto-fair, instant, offline.
🤷Yes or No Picker
Can't decide? Free yes/no picker: cryptographically fair random answers — big result, flip history, instant.
⏲️Online Countdown Timer
Free countdown timer: set minutes and seconds, big display, beep alarm at zero — workouts, cooking, exams.
⏱️Online Stopwatch
Free online stopwatch: start/stop/lap/reset with millisecond precision and a lap table — workouts, cooking, ti
🔢Lucky Number Calculator
Calculate your lucky number free from your date of birth using the standard numerology method (digit reduction
♈Zodiac Sign Finder (Star Sign)
Find your star sign from your date of birth: exact date ranges, element, ruling planet, symbol and traditional
📈Biorhythm Calculator
Calculate your biorhythm cycles free: the 23-day physical, 28-day emotional and 33-day intellectual curves fro
🎨Lucky Color Finder (By Birth Date)
Find your lucky colour free from your birth date and day of the week, using the traditional numerology colour
🐾Pet Age Converter (Dog & Cat Years)
Convert dog and cat age to human years free using the size-aware formula, not the old ×7 myth. Enter the pet's
🥣Pet Food Calculator (Daily Portions)
Work out your pet's daily food amount free: resting and maintenance energy needs from weight, age and body con
🎯GPA Goal Calculator
Enter current GPA, credits earned and credits left, and see the exact average GPA you must earn in remaining t
💱Currency Converter
Convert currency online free with live daily exchange rates for 160+ world currencies — USD, EUR, GBP, PKR, IN
🏛️Roman Numeral Converter
Convert numbers to Roman numerals and back free: 1–3999 both directions with validation and a quick reference
🍅Pomodoro Timer
Free Pomodoro timer: 25-minute focus, 5-minute break, long break after 4 rounds, with audio chimes and session
📐Aspect Ratio Calculator
Solve aspect ratios instantly — enter W×H to get the simplified ratio, or pick 16:9, 4:3, 21:9 and more to fin
👥Age Difference Calculator
Find the exact gap between two birthdays or event dates — precise years, months and days plus total days and w
🌐Bandwidth Calculator
Free bandwidth calculator: file size and connection speed in, ideal download time out - plus monthly website b
💰1099 Tax Calculator
Estimate 2026 taxes on 1099 income: self-employment tax at 15.3 percent, federal income tax after expenses, an
💰Annuity Calculator
Project annuity accumulation: future value of a lump sum plus monthly contributions at an assumed growth rate,
💰ATS Resume Checker
Rate your resume on ATS-friendly signals: quantified results, action verbs, keywords, page length, headings, a
💰Business Loan Calculator
Estimate business loan payments: monthly principal and interest, total interest over the term and total cost i
💰Company Tax Calculator
Estimate C-corporation tax: 21 percent federal plus your state rate on taxable profit. See combined tax, after
💰Crypto Tax Calculator
Estimate tax on a crypto sale for 2026. Short-term gains at ordinary rates, long-term at 0, 15, or 20 percent.
💰CV Maker (Academic Style)
Draft a reverse-chronological academic CV for UK and EU applications: profile, core skills, career history, la
💰Debt Consolidation Loan Calculator
See what a debt consolidation loan could change: new fixed monthly payment, monthly saving versus current APR
💰Employer Cost Calculator
Total the real cost of a hire: salary plus payroll taxes, benefits, and overhead, with a cost multiplier for o
💰Forex Lot Size Calculator
Size forex positions from account risk: balance, risk percent, stop in pips, and pip value per lot produce a l
💰Forex Trade Simulator
Simulate a completed forex trade: entry, exit, lot size, and direction yield pips gained and profit or loss in
💰Freelance Invoice Template
Price a freelance invoice: hours at your rate, expenses, and tax, with clear totals. Plus must-haves like invo
💰Life Insurance Needs Calculator
Estimate life insurance coverage with the income-replacement method: salary times support years, plus debts, m
💰Australia Mortgage Calculator
Australian home loan repayment estimate in AUD: monthly figure, total interest and total cost from price, depo
💰Canada Mortgage Calculator
Canadian mortgage payment estimate with semi-annual compounding: monthly payment, total interest and total pai
💰Florida Mortgage Calculator
Florida mortgage payment estimate from home price, down payment, rate and term. See loan amount, total interes
💰Hawaii Mortgage Calculator
Estimate a Hawaii home loan payment from price, down, rate and term. Loan amount, total interest and lifetime
💰Maryland Mortgage Calculator
Maryland mortgage calculator: monthly principal and interest from price, down payment, rate and term, plus tot
💰Texas Mortgage Calculator
Estimate a Texas mortgage payment from price, down payment, rate and term. Shows loan amount, total interest a
💰UK Mortgage Calculator
UK repayment mortgage estimate in GBP: monthly payment, total interest and total repaid from price, deposit, r
💰Washington Mortgage Calculator
Washington mortgage payment estimate: enter price, down payment, rate and term for monthly principal and inter
💰Online Will Maker
Plan a will with an educational checklist: executor, guardians, witnesses, and digital assets, plus whether a
💰Overtime Calculator
Calculate overtime pay at 1.5x, 2x, or 1.25x your hourly rate and see weekly plus annual totals. Built for FLS
💰Payroll Calculator
Estimate federal income tax, Social Security, and Medicare on any 2026 salary. See annual and per-period take-
💰Georgia Employer Payroll Tax Calculator
Estimate Georgia employer payroll taxes: FICA match, FUTA, and UI at the 2.64 percent new-employer rate on the
💰New York Employer Payroll Tax Calculator
Estimate New York employer payroll costs: FICA match, FUTA, and state UI near 4.1 percent on the 12,800 dollar
💰North Carolina Employer Payroll Tax Calculator
Estimate North Carolina employer payroll taxes: FICA, FUTA, and state UI near 1 percent on a taxable base arou
💰Texas Employer Payroll Tax Calculator
Estimate Texas employer payroll taxes: FICA match, FUTA, and state UI at 2.7 percent on the 9,000 dollar wage
💰Quarterly Tax Calculator
Split your yearly tax bill into four estimated payments. Enter expected 1099 income and expenses to see self-e
💰Refinance Calculator
Compare your current loan to a refinance: new monthly payment, monthly saving, breakeven months on closing cos
💰Resume Score Checker
Estimate recruiter appeal from experience depth, quantified bullets, industry terms, leadership, education, an
💰Resume Template (Plain Text)
Build a plain-text, ATS-safe resume skeleton in seconds: standard headings, one-page format, no tables or grap
💰Retirement Investment Calculator
Project investments in nominal and inflation-adjusted dollars: lump sum plus monthly contributions, with a pur
💰Retirement Savings Calculator
Project retirement savings from a current balance plus monthly contributions at a constant assumed return, spl
💰Reverse Mortgage Calculator
Estimate a HECM-style reverse mortgage principal limit from home value and age, then see net proceeds after an
💰Salary Paycheck Calculator
Calculate take-home pay using 2026 federal tax brackets, Social Security, and Medicare. Includes pre-tax deduc
💰Contractor Salary Calculator
Convert an hourly contractor rate into annual, monthly, and weekly income based on billable hours and weeks wo
💰Self-Employed Tax Calculator California
Estimate taxes on California self-employment profit: 15.3 percent SE tax, federal income tax, and California b
💰Self-Employed Tax Calculator UK
Estimate 2025-26 UK self-employed tax on your profit: income tax, Class 4 and Class 2 National Insurance, and
💰Solar Panel Cost Calculator
Estimate solar cost and payback after the federal credit expired. Enter system size, cost per watt, and saving
💰Stock Market Simulator
Project a brokerage balance at a constant assumed return: lump sum plus monthly contributions, with contribute
💰Federal Tax Calculator
Estimate 2026 federal income tax from gross income. See tax owed, effective rate, and take-home after federal
💰Tax Deduction Calculator
Compare the 2026 standard deduction with itemizing. Enter income and itemized totals to see your deduction, fe
🧮Scientific Calculator
A free online scientific calculator with sin, cos, tan, powers, roots, logs and factorials — correct precedenc
🎓A-Level Grade Calculator
Work out your A-Level grade from up to four module marks with AS/A2 weighting and editable grade boundaries —
📝ACT Score Calculator
Enter your four ACT section scores from 1 to 36 and get your composite score instantly, with a clear table sho
🏫SAT Score Calculator
Estimate your Digital SAT score from raw module marks — approximate 200-800 section scales and a 400-1600 tota
🍕Fraction Calculator
Add, subtract, multiply and divide fractions with exact simplified answers, mixed numbers, decimals and step-b
📐Quadratic Equation Solver
Solve any quadratic equation for exact radical roots, decimals, discriminant, vertex and factored form — it ha
🐕Dog Age Calculator
Convert your dog's years, months and size class into a human-equivalent age with a life-stage label — a fast e
⛳Golf Handicap Calculator
Enter 5 to 20 rounds with course rating and slope to get a simplified handicap index and course conversion — q
🏷️Stacked Discount Calculator
Apply up to five percent or dollar discounts in exact store order with running totals and an order-swap check