Explore Additional Utilities

Salinity — PSU ↔ g/kg ↔ % — seawater concentration

Convert between Practical Salinity Units (PSU), salinity concentration in g/kg (ppt ‰), and percentage (%).

oceanography

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.

welding-metallurgy

Standing timber volume — DBH + height → cubic meters

Calculate merchantable standing timber volume in cubic meters or board feet using Doyle, Scribner, or International rules.

forestry

Final glide calculator — height + glide ratio → reach distance

Analyze safety margins, required arrival altitude, wind impact, and distance reachable for your glider final glide phase.

gliding-soaring

Lux & Foot-Candles Photometry

Calculate architectural light levels, illuminance indexes, and foot-candle units.

unit

Concrete Mix Ratio Calculator

Calculate volume ratios, cement bags, sand, gravel, and water quantities for standard concrete grades.

unit

Engineering Slope & Gradients

Compare elevation grades, percentage slopes, and corresponding degrees.

unit

Cooling & HVAC Power (BTU/h ↔ W)

Compare heating, cooling, and air conditioning power capacities with corresponding watt ratings.

unit

CFM ↔ m³/hour — air flow for ventilation

Convert ventilation air flow rates and reference standard design volumes for common room types and equipment hoods.

hvac-thermal

Reproductive Health Tracking Suite

Track menstrual cycles, predict ovulation day, fertile windows, and estimate pregnancy due dates & milestones.

health

Flow velocity — pipe diameter + flow rate → m/s

Calculate average fluid flow velocity from pipe size or inner diameter and volumetric flow rate values.

plumbing

De Broglie wavelength — particle mass + velocity → wavelength

Calculate quantum mechanical wavelengths for matter waves under both classical and relativistic velocities.

quantum-atomic

Depth of Field (DoF) Calculator

Evaluate depth of field, near/far sharp limits, and circle of confusion based on sensor crop factor, focal length, aperture, and subject distance.

unit

Cheese Yield & Rind Calculator

Estimate the edible cheese yield and rind weight waste for whole wheels and wedges of various cheese types.

unit

Planck units ↔ SI units — fundamental physics constants

Translate between SI physical units and the fundamental Planck natural units based on universal constants.

quantum-atomic

Nutritional Energy (kcal ↔ kJ)

Convert food nutritional calories and physical kilojoules standard label indexes.

unit

Text Case Converter

Swiftly switch text between UPPERCASE, lowercase, camelCase, snake_case, or Title Case.

devtools

Loan EMI Payment Calculator

Calculate monthly loan EMI payments, total interest payable, and overall payout projections.

currency

Exposure Value (EV) & Lux Converter

Convert between EV and various shutter speed, aperture, and ISO combinations, with equivalent scene lux and EV100 references.

unit

IBU ↔ bitterness ratio — hop bitterness vs malt sweetness

Calculate the BU:GU bitterness ratio by comparing hop Bitterness (IBU) against malt sweetness (Gravity Units).

brewing-fermentation