15 free tools · No account required
Free Lifestyle, Sizing & Measurement Tools
Calculate everyday dimensions, compare sizing systems, plan fabric use, or explore astronomy and astrology tools. Each page explains its inputs and conventions. Measurement conversions, sewing allowances and interpretive charts answer different questions and need different checks.
Choose your tool
Bra Size Calculator (US, UK, EU & AU)
Estimate a starting bra size from bust and underbust measurements, then compare regional labels and sister sizes.
Open tool →Female Body Shape Calculator
Compare measurement ratios for clothing and styling. Shape categories are descriptive conventions, not health assessments.
Open tool →Screen Size Calculator
Calculate screen width and height from diagonal and aspect ratio, or find the diagonal from width and height. Compare TV and monitor sizes in inches or centimeters.
Open tool →CPS Click Speed Test
Measure your clicks per second with a free CPS test. Choose a timer, click or tap to start, and copy your score to challenge a friend.
Open tool →Tire Size Comparison Calculator
Compare two metric radial tire sizes, see their nominal dimensions overlaid, and estimate the change in road speed for a given speedometer reading.
Open tool →Trip Fuel Cost Calculator
Estimate fuel use and trip cost from distance, efficiency and pump price. Compare metric or US units, include a return journey, and split the fuel bill.
Open tool →Sun, Moon & Rising Calculator
Explore your Big 3 with tropical astronomical positions, instant GPS geolocation or offline city search, elemental breakdown, and a downloadable card.
Open tool →Zodiac Compatibility Calculator
Compare any two zodiac signs using traditional elements and sign-level aspects. Scores are illustrative conversation prompts, not relationship predictions.
Open tool →Chinese Zodiac & Element Calculator
Find your animal, year element, and yin/yang polarity with the Lunar New Year cutoff. Explore the sixty-year cycle and popular cultural associations.
Open tool →Reaction Time Test
Wait for green, react, and discover your five-round average. Test with a mouse, touch, or keyboard and download a card to share.
Open tool →Life in Numbers / Life Receipt
Turn your birth date into a live receipt of elapsed time, estimated biological totals, orbital travel, and your birth moon phase.
Open tool →Circle Skirt Calculator
Calculate circle skirt waist radius, outer cut radius, and fabric yardage for full, half, quarter, and three-quarter skirts with clear folding and panel guides.
Open tool →Pleat Spacing Calculator
Calculate knife and box pleat spacing, adjusted widths, underfold depths, and fabric requirements. Follow a numbered pinning ruler for skirts and curtains.
Open tool →Fabric Yardage & Bolt Width Converter
Convert sewing pattern yardage between 45, 54, and 60-inch fabric widths. Add print or nap allowances, enter fractions, and compare buying amounts in yards.
Open tool →Quilt Binding & Backing Calculator
Calculate quilt binding strips, perimeter, overlap, and fabric yardage. Compare standard and extra-wide backing with seam layouts and four-inch edge overage.
Open tool →
Which lifestyle & sizing tool should I use?
Choose a physical size
Measure the relevant body, screen or object dimension and check the unit. Manufacturer sizing and enclosure dimensions can differ from a calculator’s reference model.
Plan a sewing project
Compare the tool’s pattern and seam-allowance assumptions with your fabric and intended fit. Make a test piece before cutting valuable material.
Explore dates and sky positions
Use the correct location, time and timezone. Astrology interpretations are for personal interest and are separate from astronomical position calculations.