Date & Time

Time Zone Converter

Convert time between major world time zones instantly. Plan international meetings and cal

Everyday

Speed Distance Time Calculator

Calculate speed, distance, or time from any two known values. Supports km/h, mph, and m/s.

Finance

Simple Interest Calculator

Calculate simple interest on a principal amount for a given time period and rate.

Finance

SIP Calculator

Calculate returns on your Systematic Investment Plan (SIP) and see how your monthly invest

Finance

CAGR Calculator

Calculate Compound Annual Growth Rate (CAGR) to measure investment growth over time.

Everyday

Pace Calculator

Calculate running pace, finish time, or distance for any race from 5K to marathon.

Date & Time

Countdown Timer Calculator

Calculate the exact days, hours, minutes and seconds remaining until any future date and t

Math

Savings Goal Calculator

Calculate how much you need to save per month to reach a financial goal within a set timef

Physics

Velocity Calculator

Enter the distance traveled and time taken to calculate the velocity of an object. Instant

Finance

Compound Interest Calculator

Calculate compound interest and see how your investment grows over time with the power of

Finance

Currency Converter

Convert between major world currencies using real-time exchange rate logic. Covers USD, EU

Date & Time

Time Duration Calculator

Calculate the total duration between two times in hours, minutes, and seconds. Supports ov

Business

Investment Growth Calculator

Calculate how your investment grows over time using compound interest.

Physics

Projectile Motion Calculator

Calculate range, max height, and time of flight for a projectile given initial velocity an

Chemistry

Half Life Calculator

Calculate the remaining quantity of a radioactive substance after a given time using half-

Ecology

Solar Panel Savings Calculator

Estimate your annual savings, payback period, and lifetime savings from installing solar p

Marine

Sailing Distance Calculator

Calculate the total nautical distance and estimated sailing time of your yacht voyage acro

Marine

Dead Reckoning Calculator

Estimate a vessel's new position from a starting latitude/longitude, true course, speed an

Marine

Rhumb Line Distance Calculator

Calculate rhumb line (loxodrome) distance and true course between two latitude/longitude p

Physics

Free Fall Calculator

Calculate the velocity, distance fallen and time for an object in free fall under gravity,

Math

Customer Lifetime Value Calculator

Calculate the Customer Lifetime Value (CLV) to understand the long-term revenue potential

Health

Blood Alcohol Content Calculator

Estimate your Blood Alcohol Content (BAC) based on drinks consumed, body weight, gender an

Date & Time

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates instantly. Supports current time

Math

Churn Rate Calculator

Calculate monthly and annual customer churn rate, retention rate, and average customer lif

Marine

Maritime Intercept Course Calculator

Calculate the precise course and time required to intercept another vessel using vector an

Finance

Intermittent Fasting Calculator

Calculate your eating window and fasting window start/end times for popular IF protocols l

Engineering

Bandwidth Calculator

Calculate network bandwidth, data transfer time and internet speed requirements for files

Finance

Hydration Tracker Calculator

Track your daily water intake and see how close you are to your hydration goal in real tim

Marine

Fresh Water Allowance Calculator

Professional multi-tab calculator for FWA, DWA, Draft Change, New Draft, Cargo Loading, an

Marine

Sea Service Calculator

Calculate your total sea service accurately from multiple sign-on and sign-off dates for c

Marine

Speed Converter

Convert between knots, km per hour, mph, and meters per second, with a vessel speed catego

Marine

ETA Calculator

Precise estimated time of arrival calculations for your destination port based on distance

Marine

TPC and TPI Calculator

Calculate Tons Per Centimeter (TPC) and Tons Per Inch (TPI) immersion for vessels from wat

Marine

Seafarer Salary Calculator

Calculate your monthly gross wage and total contract earnings from basic wage, fixed overt

Marine

Arc to Time Converter

Convert arc measurements in degrees, minutes, and seconds to time in hours, minutes, and s

Marine

Distance Converter

Convert between nautical miles, kilometers, statute miles, fathoms, cables, meters, and fe

Marine

CPA and TCPA Calculator

Calculate Closest Point of Approach and Time to Closest Point of Approach from radar obser

Marine

Distance, Speed & Time Calculator

Calculate distance, speed, or time for any voyage leg, with an ETA mode, multi-leg passage

Marine

Maritime Currency Converter

Convert seafarer salaries across major currencies to compare contracts, calculate allotmen

Marine

Time to Arc Converter

Convert time values in hours, minutes, and seconds into arc degrees, minutes, and seconds

Marine

Parallel Sailing Calculator

Calculate course and distance when sailing due East or West along a parallel of latitude,

Marine

Maritime Unit Converter

Real-time conversion across multiple maritime categories including speed, length, pressure

Marine

Mercator Sailing Arrival Position Calculator

Swiftly discover your arrival coordinates given your departure position, course, speed and