📅

Everyday Calculators

Date, age, time, unit converters, and more. 27 free calculators — no sign-up required.

Antenna Gain Calculator

Calculate antenna gain in dBi from four methods: power ratios, directivity and efficiency, effective aperture (parabolic dish), or half-power beamwidth. Covers dipole, Yagi, patch, parabolic reflector, and aperture antennas.

Degrees of Kevin Bacon Calculator

Look up any actor's Kevin Bacon number — the degrees of separation from Kevin Bacon through shared film appearances. Database of 200+ actors with full connection chains shown. Based on the Six Degrees of Kevin Bacon theory.

Hull Speed Calculator

Calculate the theoretical hull speed of any displacement vessel from waterline length. Returns speed in knots, km/h, and mph with Froude number, speed-to-length ratio, and passage time estimates.

Calculate alcohol by volume from original and final gravity, or find standard drinks and alcohol content from any beer, wine, or spirit.

3D Printing Time Calculator

Estimate 3D printing time from volume, layer height, print speed, infill, and filament type. Includes material usage and cost estimate.

Age Calculation in Nepali

Calculate age in Nepali Bikram Sambat (BS) calendar from a BS date of birth. Convert BS dates to AD and find Nepali age.

Calculate exact age in years, months, days, hours, and minutes from date of birth. Includes next birthday countdown and age on a specific date.

Calculate Cubic Yards of Dirt

Calculate cubic yards of dirt, soil, fill, or topsoil needed for any project. Supports rectangular, circular, and triangular areas with depth.

Cord of Wood Calculator

Calculate how many cords of firewood you need for heating season. Also convert between full cord, face cord, rick, and cubic feet.

Gradient to Percentage Calculator

Convert gradient (slope) between angle in degrees, ratio, and percentage. Useful for roads, ramps, roofs, drainage, accessibility, and landscaping.

Linear Foot Square Foot Calculator

Convert linear feet to square feet by entering width. Calculate square footage from linear footage for flooring, fencing, lumber, and materials.

Sq Ft to Linear Ft Calculator

Convert square feet to linear feet by entering material width. Useful for flooring, fencing, roofing, siding, and trim calculations.

Yards to Tons Calculator

Convert cubic yards to tons for gravel, dirt, sand, mulch, topsoil, and other materials. Uses material-specific density factors.

YouTube Playlist Length Calculator

Calculate total watch time for a YouTube playlist at normal speed and at 1.25x, 1.5x, 1.75x, and 2x playback speeds.

Acrylic Pour Paint Calculator

Calculate how much acrylic paint and medium you need for pour painting projects. Get coverage estimates and color distribution for any canvas size.

Board Foot Measure Calculator

Calculate board feet from lumber thickness, width, length, quantity, waste, and price with a clear formula and worked example.

Alcohol Calculator for Wedding Reception

Estimate beer, wine, liquor, and total drink servings for a wedding reception using guest count, hours, drink mix, and buffer.

Disney Dining Plan Calculator

Compare Disney dining plan cost against estimated meal, snack, and mug value using party size, nights, plan type, and custom prices.

Cross Stitch Fabric Calculator

Calculate stitched size and fabric cut size from stitch count, fabric count, over-one or over-two stitching, and margins.

Backing for Quilts Calculator

Calculate quilt backing size, fabric panels, raw yardage, and rounded yardage from quilt size, overage, fabric width, and seam allowance.

Bathroom Mirror Size Calculator

Estimate bathroom mirror width and mounting height from vanity width, wall clearance, mirror ratio, counter height, and eye height.

TV Mounting Height Calculator

Calculate comfortable TV mounting height from screen diagonal, aspect ratio, eye height, viewing distance, and furniture clearance.

LEGO Price per Piece Calculator

Calculate LEGO cents per piece after discount, tax, shipping, rewards, and optional minifigure value for better set comparisons.

Ball Pit Ball Calculator

Estimate how many balls are needed for a rectangular or round ball pit using fill depth, ball diameter, and packing density.

Prayer Time Calculation Methods

Compare prayer time calculation methods using date, latitude, longitude, UTC offset, Fajr angle, Isha angle, and Asr method.

Soil Yardage Calculator

Calculate soil cubic yards, cubic feet, bag count, and estimated cost for raised beds, topsoil, compost, mulch, and landscaping fill.

Linear Footage Calculator

Calculate linear feet from length and quantity or convert area to linear footage using material width, waste percentage, and stock length.