The cargo calculator
built for oil traders

Flat prices, cargo values, market comparison, quantity conversions, and voyage estimates. All units, all products, in seconds.

Download on the App Store

iPhone, iPad & Mac · Android coming soon

FlatPrice app showing pricing calculations
FEATURES

Five tabs. Everything you need.

Purpose-built for physical oil trading. No spreadsheets, no guesswork.

CARGO

Flat Price & Cargo Valuation

  • Select from 11 petroleum products — Light Crude, ULSD, Gasoil, Jet A-1, HSFO, VLSFO, Naphtha, Gasoline, and more
  • Enter benchmark + differential in any price unit ($/bbl, $/MT, $/m³, ¢/gal, $/L)
  • See flat price instantly converted across all units
  • Cargo valuation — total value in USD based on quantity
  • Quantity conversion between MT, LT, barrels, m³, and gallons
  • ASTM Table 54A/B volume correction factors (VCF) at any temperature
  • API gravity, air vs. vacuum density, buoyancy factor, TCF
  • Override density for off-spec cargoes
  • Share pricing card as a branded image
CONVERT

Standalone Unit Converter

  • Quick conversion between any two price or volume units
  • All price units: $/bbl, $/MT, $/m³, ¢/gal, $/L
  • All volume/mass units: MT, LT, bbl, m³, gal
  • Density-aware — conversions use the selected product's density
  • Useful for quick checks without setting up a full cargo calculation
MARKET

Market Compare NEW

  • Add unlimited market entries — each with port, price, unit, discount, freight, and harbor costs
  • Drag to reorder — top market becomes the base for comparison
  • See prices normalized to any display unit ($/MT, $/bbl, ¢/gal, $/m³, $/L)
  • Best price highlighted green, worst red
  • Spread and base-vs-all differentials (blue if higher, red if lower)
  • Market differential card — compare any two markets with net pricing and total cargo impact
  • Day-over-day price changes (Δ DAY column) — double-tap a price to set it as previous day
  • Daily price history — snapshots saved automatically, swipe to delete old entries
  • Previous day prices auto-filled from history on app launch
  • Share comparison table and differential as branded images
FX

Currency Conversion

  • Live exchange rates fetched from open.er-api.com (15-minute cache)
  • Supported currencies: USD, EUR, GBP, SGD, AED, JPY, CNY, INR
  • See flat price and cargo value in your chosen currency
  • Manual rate override for custom or forward rates
VOYAGE

Voyage Estimates NEW

  • Nautical mile distances between 13 major oil ports (Rotterdam, Houston, Singapore, Fujairah, and more)
  • 60+ route pairs with primary and alternative routes (Suez, Panama, Cape of Good Hope)
  • Transit time computed from distance and vessel speed
  • Speed presets: slow steaming (10 kn), eco (11 kn), laden (12.5 kn), ballast (13.5 kn), full speed (15 kn), or custom
  • Canal transit fee warnings
  • Share voyage details as a branded image
SETTINGS

Customization

  • Three themes — Terminal (dark monospace), Modern (light), and Trader (compact single-page layout)
  • Set a default product so the app opens ready for your usual cargo
  • All data persisted locally — your prices and settings survive app restarts
HOW IT WORKS

Three taps to a flat price

01

Pick your product

11 petroleum products from Light Crude to Gasoline, each with correct density and ASTM table.

02

Enter your pricing

Benchmark, differential, and quantity. Choose your price unit and let FlatPrice handle the conversions.

03

Share the result

Export a branded pricing card to WhatsApp, email, or any app. Professional and ready to send.

PRODUCTS & UNITS

Speaks every trader's language

$/bbl $/MT $/m³ ¢/gal $/L MT LT bbl m³ gal API VCF BF NM

Get FlatPrice today

Available now on the App Store for iPhone, iPad, and Mac.

Download on the App Store

Android coming soon