Free online calculators and converters
Type what you want to work out. Every answer comes with the formula and the steps, so you can see exactly how it was calculated.
Financial Calculators
79- 401(k) Calculator
- Amortization Calculator
- Annuity Calculator
- Annuity Payout Calculator
- APR Calculator
- Australia Tax and Take-Home Pay Calculator 2026-27
- Auto Lease Calculator
- Auto Loan Calculator
Math Calculators
38- Area Calculator
- Arithmetic and Geometric Sequence Calculator
- Basic Calculator
- Big Number Calculator
- Circle Calculator
- Common Factor Calculator
- Confidence Interval Calculator
- Distance Calculator (Between Two Points)
Fitness & Health Calculators
20- BMI Calculator
- BMR and Daily Calorie Calculator
- Body Fat Calculator
- Body Surface Area Calculator (BSA)
- Calories Burned Calculator
- eGFR Calculator (CKD-EPI 2021)
- Glycemic Index and Glycemic Load Calculator
- Lean Body Mass Calculator
Unit Converters
13- Area Converter
- Binary, Hex and Decimal Converter
- Cooking Converter: Cups to Grams
- Data Storage Converter
- Length Converter
- Marla to Square Feet Converter (Marla, Kanal, Acre)
- Roman Numeral Converter (1 to 3999)
- Speed Converter
Everyday & Time Calculators
48- Age Calculator
- Bandwidth Calculator (Download Time)
- Base64 Encode and Decode
- BTU Calculator (Air Conditioner Size)
- Concrete Calculator
- Date Calculator
- Day of the Week Calculator
- Density Calculator (Mass, Volume)
Free online calculators for money, math, health and everyday life
CalcPulse is a collection of free online calculators and converters. Each one is built to give you a clear answer quickly and to show the formula and the steps behind it, so you can check the result or learn how it works. There is nothing to download and no sign-up.
Use the finance calculators to work out a mortgage payment, a loan, compound interest, retirement savings or take-home pay in the US, UK, Australia, Canada and Pakistan, including the PTA tax on a mobile phone. The math calculators cover percentages, fractions, the quadratic formula, statistics and geometry. The health calculators include BMI, calorie needs, due dates and body fat, and the converters turn units of length, weight, temperature, area and volume into one another.
Tax rates and rules are checked against official sources and updated each tax year. Results are estimates for planning and learning, and they are not professional financial, tax or medical advice.