Free Online Calculators

Quick, reliable calculators for health, money and everyday maths. Every result updates as you type and uses standard, published formulas — from checking your BMI, daily calories or body fat to calculating zakat, planning a loan or projecting compound interest.

Age Calculator

Calculate exact age in years, months, days, and total time units from a birth date.

Percentage Calculator

Work out percentages, percentage change, and what X% of Y is.

BMI Calculator

Calculate Body Mass Index with metric and imperial units and health category.

EMI Calculator

Compute monthly loan EMI, total interest and amortization breakdown.

Loan Calculator

Estimate monthly payment, total cost and interest for any loan.

Discount Calculator

Find the final price and amount saved after a percentage discount.

Profit Margin Calculator

Calculate gross profit, margin % and markup from cost and revenue.

GST Calculator

Add or remove GST/VAT and see net, tax and gross amounts.

Compound Interest Calculator

Project compound interest growth with flexible compounding frequency.

ROI Calculator

Calculate return on investment, net profit and annualized ROI.

Salary Calculator

Convert salary between hourly, daily, weekly, monthly and yearly.

Calorie Calculator

New

Calculate your BMR and daily calories to maintain, lose or gain weight.

Ideal Weight Calculator

New

Find your ideal body weight for your height using 4 medical formulas.

Body Fat Calculator

New

Estimate body fat percentage with the US Navy tape-measure method.

Zakat Calculator

New

Calculate zakat on cash, gold, silver, investments and business assets.