Chart Scale Converter
Convert map dimensions in millimeters to real-world marine navigation distances or vice versa based on nautical chart scale.
A scale ratio of 1:25,000 indicates that 1 unit of measurement on this chart represents 25,000 of the same units in the real ocean environment. Large-scale charts (e.g. 1:10,000) show detail for harbors; small-scale charts (e.g. 1:300,000) cover large offshore transits.
Explore Additional Utilities
Watch case size — mm diameter ↔ lug width
Analyze watch case diameter proportions, lug-to-lug spans, and find the corresponding standard strap lug-width sizes.
Prism Power Converter
Convert ophthalmic prism power between prism diopters (PD) and degrees of deviation, with light bending estimations.
Aerodynamic drag — frontal area + CdA → watts at given speed
Determine power requirements (watts) to overcome aerodynamic drag based on rider CdA, air density, and speed.
Ocean depth ↔ pressure — bar per 10 meters rule
Calculate hydrostatic and total pressure in the ocean based on depth, water density, and gravity constants.
Map scale — representative fraction ↔ bar scale
Convert map scale representative fractions (e.g., 1:24,000) to paper sizes, real-world distances, and graphical bar scales.
Fiscal Year ↔ Calendar Year Mapping
Map calendar months and dates to custom corporate Fiscal Years (FY) and quarters (Q1–Q4) with customizable fiscal start months.
Magnetic Declination
Estimate compass alignment values and offset angles between magnetic north and true north.
R-value ↔ U-value — insulation thermal resistance
Convert between R-value thermal resistance and U-value heat transmittance with preset materials lookup.
Ink viscosity — temperature ↔ consistency adjustment
Adjust oil-based printmaking inks for stiffness, tack, and temperature variations using modifiers and plate oils.
Wire feed speed ↔ amperage — MIG welding settings
Calculate MIG wire feed speed (WFS) and matching amperage. Includes gas recommendations and presets for steel, stainless, and aluminum.
Battery capacity — Ah ↔ Wh ↔ days of autonomy
Convert between Amp-hours (Ah) and Watt-hours (Wh) and calculate battery bank backup days of autonomy based on loads.
Colony weight gain — nectar flow ↔ kg per day estimate
Estimate the daily hive weight gain from raw floral nectar inflow and final cured honey production.
Fabric & Thread Density Calibrator
Analyze fabric weights, compare cotton single-ply thread counts, and calculate textile density.
Hot water demand — occupants ↔ liters per hour needed
Estimate peak hot water demand in liters per hour and size standard water heater tanks or tankless flow rates.
Standing timber volume — DBH + height → cubic meters
Calculate merchantable standing timber volume in cubic meters or board feet using Doyle, Scribner, or International rules.
No Claim Discount (NCD)
Track and project No Claim Discount percentages, claim-free year scales, and calculate potential premium savings with claim step-backs.
Exposure time — emulsion type ↔ UV source ↔ seconds
Estimate photo-emulsion exposure durations for screen printing frames or solar plates using light distance calculations.
Data Storage Units
Convert digital storage capacity sizes across bits, Bytes, MB, GB, and Terabytes.
Pipe nominal size ↔ actual OD — NPS vs DN standards
Cross-reference standard Nominal Pipe Sizes (NPS) with Diameter Nominal (DN), wall thickness, and outer diameter measurements.
Spine width — page count + paper weight ↔ mm
Calculate spine width in millimeters from page count, paper weight (gsm or basis), and cover board thickness.