diff --git a/sysid/src/main/native/cpp/analysis/JSONConverter.cpp b/sysid/src/main/native/cpp/analysis/JSONConverter.cpp
deleted file mode 100644
index 9a5505f4f32..00000000000
--- a/sysid/src/main/native/cpp/analysis/JSONConverter.cpp
+++ /dev/null
@@ -1,164 +0,0 @@
-// Copyright (c) FIRST and other WPILib contributors.
-// Open Source Software; you can modify and/or share it under the terms of
-// the WPILib BSD license file in the root directory of this project.
-
-#include "sysid/analysis/JSONConverter.h"
-
-#include <stdexcept>
-#include <string>
-
-#include <fmt/core.h>
-#include <fmt/format.h>
-#include <wpi/Logger.h>
-#include <wpi/MemoryBuffer.h>
-#include <wpi/fmt/raw_ostream.h>
-#include <wpi/json.h>
-#include <wpi/raw_ostream.h>
-
-#include "sysid/Util.h"
-#include "sysid/analysis/AnalysisManager.h"
-#include "sysid/analysis/AnalysisType.h"
-
-// Sizes of the arrays for new sysid data.
-inline constexpr size_t kDrivetrainSize = 9;
-inline constexpr size_t kGeneralSize = 4;
-
-// Indices for the old data.
-inline constexpr size_t kTimestampCol = 0;
-inline constexpr size_t kLVoltsCol = 3;
-inline constexpr size_t kRVoltsCol = 4;
-inline constexpr size_t kLPosCol = 5;
-inline constexpr size_t kRPosCol = 6;
-inline constexpr size_t kLVelCol = 7;
-inline constexpr size_t kRVelCol = 8;
-
-static wpi::json GetJSON(std::string_view path, wpi::Logger& logger) {
-  std::error_code ec;
-  std::unique_ptr<wpi::MemoryBuffer> fileBuffer =
-      wpi::MemoryBuffer::GetFile(path, ec);
-  if (fileBuffer == nullptr || ec) {
-    throw std::runtime_error(fmt::format("Unable to read: {}", path));
-  }
-
-  wpi::json json = wpi::json::parse(fileBuffer->GetCharBuffer());
-  WPI_INFO(logger, "Read frc-characterization JSON from {}", path);
-  return json;
-}
-
-std::string sysid::ConvertJSON(std::string_view path, wpi::Logger& logger) {
-  wpi::json ojson = GetJSON(path, logger);
-
-  auto type = sysid::analysis::FromName(ojson.at("test").get<std::string>());
-  auto factor = ojson.at("unitsPerRotation").get<double>();
-  auto unit = ojson.at("units").get<std::string>();
-
-  wpi::json json;
-  for (auto&& key : AnalysisManager::kJsonDataKeys) {
-    if (type == analysis::kDrivetrain) {
-      // Get the old data; create a vector for the new data; reserve the
-      // appropriate size for the new data.
-      auto odata = ojson.at(key).get<std::vector<std::array<double, 10>>>();
-      std::vector<std::array<double, kDrivetrainSize>> data;
-      data.reserve(odata.size());
-
-      // Transfer the data.
-      for (auto&& pt : odata) {
-        data.push_back(std::array<double, kDrivetrainSize>{
-            pt[kTimestampCol], pt[kLVoltsCol], pt[kRVoltsCol], pt[kLPosCol],
-            pt[kRPosCol], pt[kLVelCol], pt[kRVelCol], 0.0, 0.0});
-      }
-      json[key] = data;
-    } else {
-      // Get the old data; create a vector for the new data; reserve the
-      // appropriate size for the new data.
-      auto odata = ojson.at(key).get<std::vector<std::array<double, 10>>>();
-      std::vector<std::array<double, kGeneralSize>> data;
-      data.reserve(odata.size());
-
-      // Transfer the data.
-      for (auto&& pt : odata) {
-        data.push_back(std::array<double, kGeneralSize>{
-            pt[kTimestampCol], pt[kLVoltsCol], pt[kLPosCol], pt[kLVelCol]});
-      }
-      json[key] = data;
-    }
-  }
-  json["units"] = unit;
-  json["unitsPerRotation"] = factor;
-  json["test"] = type.name;
-  json["sysid"] = true;
-
-  // Write the new file with "_new" appended to it.
-  path.remove_suffix(std::string_view{".json"}.size());
-  std::string loc = fmt::format("{}_new.json", path);
-
-  sysid::SaveFile(json.dump(2), std::filesystem::path{loc});
-
-  WPI_INFO(logger, "Wrote new JSON to: {}", loc);
-  return loc;
-}
-
-std::string sysid::ToCSV(std::string_view path, wpi::Logger& logger) {
-  wpi::json json = GetJSON(path, logger);
-
-  auto type = sysid::analysis::FromName(json.at("test").get<std::string>());
-  auto factor = json.at("unitsPerRotation").get<double>();
-  auto unit = json.at("units").get<std::string>();
-  std::string_view abbreviation = GetAbbreviation(unit);
-
-  std::error_code ec;
-  // Naming: {sysid-json-name}(Test, Units).csv
-  path.remove_suffix(std::string_view{".json"}.size());
-  std::string loc = fmt::format("{} ({}, {}).csv", path, type.name, unit);
-  wpi::raw_fd_ostream outputFile{loc, ec};
-
-  if (ec) {
-    throw std::runtime_error("Unable to write to: " + loc);
-  }
-
-  fmt::print(outputFile, "Timestamp (s),Test,");
-  if (type == analysis::kDrivetrain || type == analysis::kDrivetrainAngular) {
-    fmt::print(
-        outputFile,
-        "Left Volts (V),Right Volts (V),Left Position ({0}),Right "
-        "Position ({0}),Left Velocity ({0}/s),Right Velocity ({0}/s),Gyro "
-        "Position (deg),Gyro Rate (deg/s)\n",
-        abbreviation);
-  } else {
-    fmt::print(outputFile, "Volts (V),Position({0}),Velocity ({0}/s)\n",
-               abbreviation);
-  }
-  outputFile << "\n";
-
-  for (auto&& key : AnalysisManager::kJsonDataKeys) {
-    if (type == analysis::kDrivetrain || type == analysis::kDrivetrainAngular) {
-      auto tempData =
-          json.at(key).get<std::vector<std::array<double, kDrivetrainSize>>>();
-      for (auto&& pt : tempData) {
-        fmt::print(outputFile, "{},{},{},{},{},{},{},{},{},{}\n",
-                   pt[0],                           // Timestamp
-                   key,                             // Test
-                   pt[1], pt[2],                    // Left and Right Voltages
-                   pt[3] * factor, pt[4] * factor,  // Left and Right Positions
-                   pt[5] * factor, pt[6] * factor,  // Left and Right Velocity
-                   pt[7], pt[8]  // Gyro Position and Velocity
-        );
-      }
-    } else {
-      auto tempData =
-          json.at(key).get<std::vector<std::array<double, kGeneralSize>>>();
-      for (auto&& pt : tempData) {
-        fmt::print(outputFile, "{},{},{},{},{}\n",
-                   pt[0],           // Timestamp,
-                   key,             // Test
-                   pt[1],           // Voltage
-                   pt[2] * factor,  // Position
-                   pt[3] * factor   // Velocity
-        );
-      }
-    }
-  }
-  outputFile.flush();
-  WPI_INFO(logger, "Wrote CSV to: {}", loc);
-  return loc;
-}