Spike's Calculators

Forestry calculators are helpful tools that can help people in the forestry industry with various tasks. Some standard forestry calculators include volume, weight, and tree height calculators. Volume calculators can help foresters determine the volume of a tree or a stand of trees, which can help estimate timber yields. Weight calculators can help foresters estimate the weight of logs or other forest products, which can be necessary for transportation and pricing. Tree height calculators can help foresters determine the height of a tree, which can help estimate the tree's age and growth rate. Many different forestry calculators are available online and can be an excellent resource for anyone working in the forestry industry.

A board foot log rule calculator is a tool used to estimate the board footage of a log. There are several online calculators available that can help you determine the board footage of a log based on its diameter and length. Some popular calculators include the International 1/4-inch Log Rule Calculator, the Doyle Log Rule Calculator, and the Scribner Log Rule Calculator.

- Brereton Log Rule - Imperial Measurements
- Blodgett Foot Rule
- Doyle Log Rule
- Early Log Rule
- International 1/8-inch Log Rule
- International 1/4-inch Log Rule
- International 1/4-inch Log Rule (Grosenbaugh)
- International 1/8-inch and 1/4-inch Log Rules
- Roy Log Rule
- Ontario Log Rule
- Scribner Log Rule
- Scribner Log Rule: Board Foot Volume of a Tree
- Scribner Decimal C
- Comparing Results from Various Board Feet Log Rules

A cubic volume log rule calculator is a tool used to estimate the volume of a log in cubic feet or cubic meters. These calculators are commonly used by foresters, loggers, and sawmill operators to determine how much lumber can be harvested from a log. Several online cubic volume log rule calculators can help you estimate the log volume based on its diameter, length, and other variables, such as taper. Some popular calculators include Smalian's Formula Calculator and Huber's Formula Calculator.

- Brereton Log Rule - Metric Measurements
- Burt's Quarter Girth Method
- Chinese National Standard
- Cubic Metre Rule
- Francon Measure
- Hoppus Rule
- Huber's Formula
- Ireland: Log Volume Measurement
- Japanese Agricultural Standard (JAS)
- Manitoba: Cubic Method
- Newton's Formula
- Nova Scotia Cubic Metre Log Scale
- Pressler's Cubic Foot Formula
- Smalian's Formula - Metric
- Smalian's Formula - Imperial
- Solid Volume of a Log
- Spike's Rule
- Swedish Log Volume Calculation
- Swedish Log Volume Calculation Method One
- Swedish Log Volume Calculation Method Two
- Swedish Log Volume Calculation Method Three
- William Klemme

Log weight calculators are tools used to estimate the weight of a log. These calculators can help you determine the weight of a log based on its dimensions, such as diameter, length, and species. These calculators are commonly used by loggers, foresters, and sawmill operators in the lumber industry to estimate the weight of logs for transportation and processing purposes.

- Estimating Cubic Metres of Wood Needed for Pulp
- Estimate the Volume of Bark as a Percentage Calculator
- Estimating Volume of Wood Required for Pulp
- Estimating the Weight of a Log
- Estimate the Weight of a Log in Kilograms using Huber's Formula
- Volume and Green Weight of a Log Calculator

Calculators that convert between amounts per square area are valuable tools for various applications. These calculators can help you convert between different units of measurement for amounts per square area yield per acre. If you're a farmer looking to estimate the yield of a crop per acre, you can use a calculator to convert between different units of measurement for yield.

Calculators that convert between amounts per square area.

- Amount per Square Inch to per Square Centimetre
- Amount per Square Centimetre to per Square Inch
- Amount per Square Metre to per Square Foot
- Amount per Square Foot to per Square Metre
- Amount per Square Yard to per Square Metre
- Amount per Square Metre to per Square Yard
- Amount per Milacre to per Square Metre
- Amount per Square Metre to per Milacre
- Amount per Acre to per Hectare
- Amount per Hectare to per Acre
- Amount per Square Mile to per Square Kilometre
- Amount per Square Kilometre to per Square Mile

The cubic volume of trees in a woodlot with conversions between different areas.

- Cubic Foot per Acre to Cubic Metres per Hectare
- Cubic Metre per Hectare to Cubic Feet per Acre
- Cubic Metre per Hectare to Hoppus Feet per Acre
- Hoppus Foot per Acre to Cubic Metres per Hectare

Stems, circumference, diameter, and basal area are essential in forestry, ecology, and biology measurements. A stem refers to the main trunk of a tree or plant, while girth refers to the circumference of the stem. Diameter is the width of the stem at a specific point, typically measured at breast height or 4.5 feet above the ground. Basal area is the cross-sectional area of the stem at breast height, typically measured in square feet per acre.

- Area of a Circle from Diameter in Metres
- Area of a Circle from Foot and Inch Diameter
- Basal Area from Diameter in Centimetres
- Basal Area from Diameter in Inches
- Basal Area from Girth Measured @ Breast Height in Centimetres
- Basal Area from Girth Measured @ Breast Height in Inches
- Circumference (Girth) of a Log from Diameter, Foot and Inch
- Convert Diameter in Centimetres to Girth in Inches
- Circumference (Girth) of a Log from Diameter, Inch and Fraction
- Diameter of Tree from Circumference Measurement
- Diameter/Centimetres to Inches/Quarter Girth
- Fixed Area Plot, Acres
- Fixed Area Plots, Hectares
- Number of Trees and Tree Spacing Calculated from Basal Area
- Square Feet (Quarter Girth) to Square Centimetres
- Square Feet (Quarter Girth) to Square Metres
- Trees per Hectare to Trees per Acre
- Trees per Acre to Trees per Hectare

Approximate the volume of trees in board feet and cubic metres.

- Doyle Log Rule for Standing Trees
- Doyle Log Rule for Standing Trees using Metric Measurements
- International ¼ Inch Log Rule for Standing Trees
- International ¼ Inch Log Rule for Standing Trees - Metric
- Scribner Log Rule for Standing Trees
- Scribner Log Rule for Standing Trees - Metric
- Standing Tree Cubic Volume Calculator
- Standing Tree Board Foot Volume Based on the Doyle Log Rule
- Standing Tree Board Foot Volume Based on the International 1/4 Log Rule