📏 Measurement tools
18 free Measurement tools. Each one runs right in your browser: no sign-up, no watermark, and your files stay on your device.
- 🛣️ Distance Converter Kilometres, miles, nautical miles, feet and yards, with walking steps and time.
- ⚖️ Weight Converter Kilograms, pounds, ounces and stones, with stones-and-pounds.
- 📏 Height Converter Feet and inches to centimetres, and centimetres to feet and inches.
- 🪐 Mass to Weight Calculator Weight in newtons on Earth, the Moon and every planet.
- 🧊 Density Calculator Find density, mass or volume from the other two.
- 🚗 Speed, Distance & Time Calculator Find speed, distance or travel time from the other two.
- ⬛ Area Calculator Area of rectangles, circles, triangles, trapeziums, irregular plots and more.
- 🛢️ Volume Calculator Volume of boxes, cylinders, spheres, cones and pipes, in litres and gallons.
- ⭕ Perimeter Calculator Perimeter of rectangles, triangles, polygons and ellipses; circumference of circles.
- 🎯 Ideal Weight Calculator Healthy weight range for your height, with four well-known formulas.
- 👣 Steps to Distance Calculator How far your steps take you, and the calories burned.
- 📐 Pythagoras Calculator The missing side, angles, area and perimeter of a right triangle.
- 🗺️ Map & Model Scale Converter Real length from a map or model, or the other way round, for any 1:N scale.
- 📏 Online Ruler A real-size ruler on your screen, calibrated with a bank card or your screen size.
- 📐 Online Protractor Drag three handles to measure any angle, on screen or on a photo you open.
- 🏔️ Elevation Finder Height above sea level of any town, place or your location, with air pressure and boiling point.
- 🗺️ Distance Between Places Straight-line distance between two places on a map, with direction and flight time.
- 👶 Child Height and Weight Percentile Find a child’s height and weight percentile and z-score for age from the WHO growth standards (0–5 years) and references (5–19 years).
