Free Online Calculators

Quick, accurate tools for everyday money, date, and number problems — no sign-up, no ads in your way.

This is a growing collection of free calculators separate from HealthGyanHub's health and fitness tools. New calculators are added regularly.

Finance Calculators

Monthly loan installment, total interest, and repayment schedule.

Future value and returns from monthly SIP investments.

Public Provident Fund maturity value and interest earned.

See how a lump sum grows with any compounding frequency.

Return on investment and annualized return.

Estimate how fast your money doubles.

Add or remove GST with a CGST/SGST breakdown.

Profit margin, markup, and target-price pricing.

Exact time between two clock times, including overnight spans.

Days, weeks, and years between two dates.

Business days between two dates, excluding weekends and holidays.

Running/walking pace, finish time, or distance.

Trigonometry, logarithms, powers, and roots.

Convert semester SGPA scores into an overall CGPA.

Convert fractions to decimals and back.

Area for flooring, paint, and construction estimates.

Convert annual salary to hourly rate, or the reverse.

Calculate tip and split the bill among any number of people.