Heat Transfer Calculator: Heat Exchangers, Insulation, U-Values

Realtor Refinance Calculator

realtorscraper/realtor-refinance-calculator

Calculates mortgage refinance scenarios across multiple locations, helping you compare refinance options and potential savings.

Remove background noise from voice recordings, podcasts, interviews, calls and videos with DeepFilterNet3 AI. Keeps the speech, removes fans, traffic, hum, wind and room noise. Optional loudness normalization. MP3, WAV, M4A, MP4 and more. No API key needed.

Indiamart Gst Profit Calculator

ochre_quest/indiamart-gst-profit-calculator

This Apify actor scrapes wholesale product listings from IndiaMart and calculates true profit margins by factoring in GST rates, shipping costs to Bangalore, and e-invoicing compliance costs for businesses with ₹10cr+ Annual Aggregate Turnover (AATO) under 2025 regulations.

Amazon FBA Fees Calculator: Profit, Margin & ROI per ASIN

moggedhq/amazon-fba-calculator

Calculate Amazon FBA fees and profit per unit for ASINs at your cost price, e.g. a yoga mat or phone case. About $0.018 per ASIN. Referral, fulfillment, storage, net profit, margin, ROI and break-even from Amazon's public Revenue Calculator. US. No login.

Body Metrics Calculator

mangudai/body-metrics-calculator

Calculate BMI, BMR, TDEE, body fat, ideal weight, healthy weight range and daily calorie and macro targets from height, weight, age, sex and activity. Offline, no API key. Metric or imperial, one or many people, one clean row of results per person.

Soil bearing capacity and settlement of footings, retaining wall stability and slope stability (Bishop) from plain text: Terzaghi, Meyerhof, Vesic, Eurocode 7, Rankine and Coulomb, with charts.

Press and shrink fit, thick cylinder and pressure vessel calculator from plain text: contact pressure from an interference or ISO fit (H7/s6), stresses, holding torque, assembly temperature, Lamé wall stresses, and ASME VIII shell and head thickness and MAWP.

HVAC duct sizing from plain text: round and rectangular ducts by friction rate or velocity, duct run pressure loss with fittings, filters and diffusers, and the airflow (cfm or L/s) for a load or air changes, with a friction chart.

Heating and cooling loads from a plain-text house or room description: Manual J-style heat balance with window solar gains, component breakdown, and air conditioner, mini-split and furnace sizes.

SAM.gov Federal Contracting Opportunity Monitor

deepaksheoran172/sam-gov-opportunity-monitor

Monitor federal contract opportunities, solicitations, and pre-solicitation notices published on SAM.gov. Export defense and civilian contracting leads to JSON & CSV. Zero proxies. Zapier ready. PPE ($0.003/record with 10 free preview items).